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Electric & Magnetic Fields Activity for Kids
- 1AA Battery
- 1Pack Neodymium Disc Magnets
- 1Copper Wire (about 20 cm)
- 1Stack the magnets on the negative side of the battery (flat side) and place it on the table.
- 2Bend the copper wire into a heart shape.
- 3Place the point of the heart on the positive end of the battery.
- 4Adjust it so that the ends of the wire lightly touch the magnets.
- 5Watch it spin!
- 6Once you get the hang of it try other shapes!
How It Works
The electric current from the battery flows through the wire, generating a magnetic field. The field from the magnets interacts with the magnetic field from the wire. This applies a force on the wire which causes it to move. Scientists call this design a homopolar motor.